curl -X POST "https://waba-sandbox.360dialog.io/v1/messages"
  -H "D360-API-KEY: I9ECEJ7Z5IDCGSD4N9TQY2KA5Y0ES7O8"
  -H "Content-Type: application/json"
  -d "{
  \"to\": \"+258873826690\",
  \"type\": \"template\",
  \"template\": {
    \"name\": \"interactive_template_sandbox\",
    \"language\": {
      \"policy\": \"deterministic\",
      \"code\": \"en\"
    }
  },
  \"messaging_product\": \"whatsapp\"
}"